package com.util;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;

import org.hibernate.HibernateException;
import org.hibernate.SessionFactory;

public class ConexaoHibernateFilter implements Filter {
	
	private SessionFactory sf;

	@Override
	public void destroy() {

		
	}

	@Override
	public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse,
			FilterChain filterChain) throws IOException, ServletException {
		
		try {
			this.sf.getCurrentSession().beginTransaction();
			filterChain.doFilter(servletRequest, servletResponse);
			this.sf.getCurrentSession().getTransaction().commit();
			this.sf.getCurrentSession().close();
			
		} catch (Throwable e) {
		
			try {
				
				if(sf.getCurrentSession().getTransaction().isActive())
					sf.getCurrentSession().getTransaction().rollback();
			} catch (Throwable e2) {
				
				e2.printStackTrace();
				
			}
			throw new ServletException();
		}
		
		
	}

	@Override
	public void init(FilterConfig conf) throws ServletException {
		
		this.sf = HibernatUtil.getSession();
		
		
	}

}
